ASPEN TECHNOLOGY INC

CUSIP: 045327103 Class: COM

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

Note: Option positions (PUT/CALL) are excluded.

Q2 2021
Shares 1,516,682 Value ($000) $208,604 Avg Close — Range —
Q1 2021
Shares 1,546,971 Value ($000) $223,274 Avg Close — Range —
Q4 2020
Shares 1,536,148 Value ($000) $200,083 Avg Close — Range —
Q3 2020
Shares 1,575,368 Value ($000) $199,426 Avg Close — Range —
Q2 2020
Shares 1,600,758 Value ($000) $165,855 Avg Close — Range —
Q1 2020
Shares 1,570,625 Value ($000) $149,319 Avg Close — Range —
Q4 2019
Shares 1,495,493 Value ($000) $180,850 Avg Close — Range —
Q3 2019
Shares 1,594,358 Value ($000) $196,234 Avg Close — Range —
Q2 2019
Shares 1,562,187 Value ($000) $194,149 Avg Close — Range —
Q1 2019
Shares 1,582,680 Value ($000) $165,010 Avg Close — Range —
Q4 2018
Shares 1,196,304 Value ($000) $98,312 Avg Close — Range —
Q3 2018
Shares 1,208,072 Value ($000) $137,611 Avg Close — Range —
Q2 2018
Shares 981,276 Value ($000) $91,004 Avg Close — Range —
Q3 2015
Shares 85,755 Value ($000) $3,251 Avg Close — Range —